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level: Atom Economy

Questions and Answers List

level questions: Atom Economy

QuestionAnswer
What does the Atom Economy tell you?-This simply tell you what the Percentage of the Mass of the Reactants is Converted to the Product you only Want.
What is the Formula of Atom Economy?-Atom Economy - Total Mr of Desired Products / Total Mr of All Products x 100
What does it mean if the Atom Economy is 100%?-This means All the Atoms in the Reactants have gone into that 1 Product which you Only Want. This means No Waste
Hydrogen Gas can be made in an Industrial Way, by Reacting Natural Gas [Methane] with Steam CH₄ + H₂O --> CO + 3H₂ -What is the Atom Economy for this Reaction?-First, find the Mr of all the Products: -CO = 28 3H₂ = 6 28 + 6 = 34 -Second, find the Mr of just the Desired Product [Hydrogen Gas] -Its 6 -Now, use the Formula to get the Atom Economy -[6/34 x 100 = 18%
Why are Low Atom Economy Reactions bad?-This is because of the fact they use Resources up quickly, in which a lot of Waste is made that has to be Disposed of, making the Reaction Unsustainable -Also, they usually don't Bring Profit in, because Raw Materials can be Expensive, and Waste Products need Money to be Managed and Removed
What can be done with the Waste Products?-They can be used to make 'by-products' which is another way to make a Desired Product, or another Product which is Useful
What other Factors are there in Industry Production?-Percentage Yield, helps with Waste and Cost -Rate of Reaction, has to be Fast Enough to get the Amount of Product in the Amount of Time you can Afford -If the Reaction is Reversible, as because then the Reaction Conditions might need to be altered- very Expensive to do so